2010-07-14 13:03:00 +00:00
|
|
|
.\"
|
|
|
|
|
.\" Copyright (c) 2010 The FreeBSD Foundation
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" This software was developed by Semihalf under sponsorship from
|
|
|
|
|
.\" the FreeBSD Foundation.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd July 12, 2010
|
|
|
|
|
.Dt SIMPLEBUS 4
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm simplebus
|
|
|
|
|
.Nd ePAPR simple-bus driver
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Cd "options FDT"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
This bus driver is dedicated for the
|
|
|
|
|
.Pa simple-bus
|
|
|
|
|
node of a flattened device tree compliant with the
|
|
|
|
|
.Pa ePAPR
|
|
|
|
|
specification.
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
entity does not represent any physical element by itself, it is rather an
|
|
|
|
|
umbrella node grouping integrated on-chip peripherals like interrupt
|
|
|
|
|
controller, connectivity controllers, accelerating engines and so on.
|
|
|
|
|
.Pp
|
|
|
|
|
The driver is generic and common for all flattened device tree nodes claiming
|
|
|
|
|
.Pa simple-bus
|
|
|
|
|
compatibility. It iterates over direct descendants of the
|
|
|
|
|
.Pa simple-bus
|
|
|
|
|
node, instantiates newbus children and assigns resources to them, based on the
|
|
|
|
|
configuration data retrieved from the nodes properties in
|
|
|
|
|
.Xr fdt 4 .
|
|
|
|
|
.Pp
|
|
|
|
|
Note the
|
|
|
|
|
.Nm
|
|
|
|
|
does not manage device resources and passes through any requests to the
|
2012-05-12 03:25:46 +00:00
|
|
|
.Xr fdtbus 4
|
|
|
|
|
layer.
|
2010-07-14 13:03:00 +00:00
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr fdt 4 ,
|
|
|
|
|
.Xr fdtbus 4 ,
|
2012-05-12 03:25:46 +00:00
|
|
|
.Xr openfirm 4
|
2010-07-14 13:03:00 +00:00
|
|
|
.Sh STANDARDS
|
|
|
|
|
Power.org Standard for Embedded Power Architecture Platform Requirements
|
|
|
|
|
.Pq Vt ePAPR .
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
support first appeared in
|
|
|
|
|
.Fx 9.0 .
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
support was developed by Semihalf under sponsorship from the FreeBSD
|
|
|
|
|
Foundation. This manual page was written by
|
|
|
|
|
.An Rafal Jaworowski .
|
